Woodworking machine



A ril 11; 1944.

W. B. BOICE woonwonxme MACHINE Original Filed Marbh 17, 1939 2 Sheets-Sheet 1 W/LL/AMB. 50/05 I April 11, 1944. w. B. BOICE woonwoRxmc MACHINE Original Filed March 17, .1939 2 Sheets-Sheet 2 Ihwentor W/FQM I (Ittomeg Patented Apr. 11, 1944 UNITED STATES PATENT OFFICE WOODWORKING MACHINE .William B. Boice, Toledo, ohm

Original application March 17, 1939, Serial No. 262,432. Divided and this application March 10, 1942, Serial No. 434,151

7 Claims. (Cl. 143-432) This invention concerns wood-working machinery and more specifically relates to a sawing machine capable of making a plurality of bevel or straight cuts as either a cut-off saw or as rip saw and to a table top for such machine.

The object of this invention is to provide a table or working surface on the machine that is equipped with a variable width slot and which will still give full support to the work piece in any position relative to the saw or cutter.

Another object of the invention is to provide the working surface of a machine table top with a variable width cutter slot that will accommodate the cutter in any angular or vertical adjustment of the cutter relative to the table top.

Other objects of the invention will occur to those skilled in the arts to which this invention pertains as the description proceeds which taken with the accompanying drawings sets forth Fig. 3 is a perspective view of the table top I,

shown in Fig. 2.

This invention is a division of application Serial Number 262,432, filed March 17, 1939.

The wood-working machine of the instant invention comprises initially a base structure I which is of a substantially rectangular shape but having a curved surface as at 2. On the upper part of the base structure there is arranged a table top or work supporting surface 3 preferably integrally associated with the base At one edge, preferably the forcorresponding leg or tooth. The slots assist in the making of angular cross cuts in a work piece. The cutter 9 is rotatably supported in a carriage l9 and is intended to be moved bodily through a. work piece to perform a cross cutting operation on the work piece when it is at rest against the guide 8. Provision must therefore be made for a slot 1 0 in the table top 3 to enable a saw or cutter 9 to be pulled through the work. Since it is also intended to operate the machine with a dado cutter provision has been made to vary the width of the slot I 0 to enable various combinations and widths of cutters to be employed. The essential object of the adjustable width slot is to permit a work piece to be supported right up against the cutter and to prevent any possible tipping of the work piece so as to cause it to become jammed between the cutter and the edge of the slot.

The foregoing results are accomplished in the provision of a pair of adjustable slot wall mem' bers II, II that are mounted in the table top 3. The detail of these members is shown more clearly in Fig. 3. Itwill be apparent that each of the members comprise initially a long relatively narrow bar member [2. The bar member [2 has integrally associated therewith a plu- .rality of tooth or leg members 14 which cooperate with corresponding slots IS in the table top 3 or in a separate piece l5a insertible in the table top as indicated by the dotted lines in Fig. 2.. Each of the leg or tooth members [4 is shouldered as at Hi. This results in providing a slot of somewhat narrower width than the l5 cut into the table top or in the separate piece l5a are likewise shouldered as at H, H. When therefore the member II is fitted into the table top the teeth or legs I 4 of movable members II will fit into the slots l5 of the table top. The shoulders l6 and I1 cooperate to maintain the top of the table and the top of the toothbar members H and I2 flush. Attention is at this point invited to the fact that the bar member H of the toothed portion M can be brought into close proximity with the saw or cutter. It should be further evident that a work piece laid on the table top in working or cooperative relation with the saw will be supported throughout the full length of the table because the teeth of the movable element will provide the intermediate support as the toothed member is adjusted relatively of the saw or cutter. The bar element II will provide a firm support immediately along side of the cutter. A pair of locking screws l8, l8 may be provided in each of the toothed elements H and H in any desired adjusted position.

The carriage l9 has projections 20, 2D thereon which cooperate with appropriate ways formed in the bed I. A handle 23 fixed to the carriage I9 is for the purpose of moving same in the channel. The cutter 9 is mounted for swinging and vertical adjustment in a carrier 13 whose axis of swing 3! lies in the upper plane of the table 3 and in the plane of the cutter 9. One wall, or the forward wall of the carrier It has slots 56 and 57 formed therein with which locking means 39a and 33, 38a cooperate to hold carrier l3 in adjusted position. Appropriate means for vertically adjusting the cutter are provided (not shown) but which are shown in detail in the application from which this case is divided. 45, 47 is the operators end of a control with which to swing the carrier l3 and 69, I0 is the operators end of a locking device for the vertical adjustment of the cutter and G3, 64 is the operators end of the mechanism for vertically adjusting the cutter. 54 is the operators end of a switch for controlling illuminated indicia 53 and II that cooperate with pointers 55 and l2. i6 is a switch for governing the rotation of the cutter and 98 and IE0 is the operators end of a locking device for the carriage I'QWhich holds the carriage during a ripping operation. The various details of the above are more fully set forth in the application referred to above but for the purposes of the instant case it is only essential to know that the several adjustments are possible and that the adjustable saw slotwill provide work support adjacent the cutter during any positional adjustment of the saw.

That which is regarded new, novel and useful and which is sought to be protected by Letters Patent of the United States is as follows:

1. In a wood working machine; a base; a work supporting means on said base; a cutter movable relativeto said base andsupported in a carriage; means to tilt and vertically adjust said cutter;

adjustable means on. said work supporting means adapted to fully support work adjacent said out ter irrespective of the width of said cutter, said means comprising a plurality of toothed struc tures formed in said work supporting means; a

bar member adjacent to and parallel to the plane of said cutter on each side thereof and movable toward and away from said cutter relatively of said base, each said bar having toothed members interfitting with a corresponding one of said toothed structures of said work supporting means, each interfitting set of a toothed member and toothed structure being maintained in a telescoping relationship and adapted to support work immediately adjacent said cutter irrespective of the widthof the cutter.

2. In a wood working machine, the combination; a work top integral with said machine and having a substantially central longitudinal opening with an inwardly directed toothed portion at each side thereof; a relatively movable, tiltably and vertically adjustable cutter in said opening; an adjustable member parallel to the plane of said cutter in said top adjacent said cutter on each side thereof providing the walls of a slot in which said cutter is movable, said adjustable members providing a support for a work piece immediately adjacent said cutter and for the full length of cutter movement irrespective of the thickness or diameter of said cutter, each said adjustable member having a toothed portion interfitting with a toothed portion in said top, said toothed portions being so constructed and arranged that the upper surfaces are flush; and means for maintaining said members in adjusted positionrelative to said cutter and work top.

7 3. A wood working machine with an adjustable saw slot; a saw movable within said slot; a machine top in which said slot is provided comprising a plurality of members extending parallel to the plane of said saw adjustable relatively of each other in a horizontal plane; means on said adjustable members interfittlng with means on said top whereby said members are movable'relatively of said top, said means including toothed members on said top and members, said means adapted to completely support a work pieceon said top immediately adjacent a cutting tool and to prevent tipping of said work piece.

4. In a work table top with an adjustable cutter slot; a cutter movable within said slot; toothed formations in said top; a bar member disposed parallel to said cutter; toothed formations on said bar member; said toothed formations on said bar and in said top telescopically interfittingly slidable with respect to each other when said slot is varied in width; said bar member supporting a work piece substantially the entire length of said top and said toothed formations being flush with said table top.

5. In a machine work table top having an adjustable cutter slot; a cutter movable within said slot; tooth formations in said top extending towards each other and disposed in an opening in said top; a pair of bar members in said opening providing the walls of said cutter slot between them and extending longitudinally of said opening; tooth elements on said bar members; and said tooth elements on said bar and said table top telescoping relatively of each other when said bar members are moved relatively of each other when said slot width is varied.

6. In a device as set forth in claim 4 wherein said toothed formations are shouldered to provide more rigid support for said members,

'7. In a saw machine; a saw machine having a work top with a slot therein and a cutter disposed in said slot; tooth elements fixed to two of the walls of said slot and extending toward each other; two allochiral bar elements supported lengthwise in said slot on opposite sides of the cutter; tooth elements on the side of each of said bar elements away from said cutter; said slot tooth elements telescoping with said bar tooth elements; and said telescoping tooth elements and their associated bar elements supporting a work piece entirely across said table top and immediately adjacent said cutter.

WM. B. BOICE. 

